Curable composition and cured product thereof
AssigneeKaneka Corporation
InventorsAyako Yano, Noriko Noro
Life of this patent
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Abstract
The present invention aims to provide a curable composition without adverse effects on the environment, which exhibits excellent curability without containing a toxic organotin curing catalyst, and gives a cured product that does not have discoloration and cracks on the surface thereof even after being exposed to the atmosphere and ultraviolet light for a long time. The present invention also aims to provide the cured product. The curable composition comprises: (A) an organic polymer having a reactive silyl group; (B) a guanidine compound having a specific structure; and (C) a phosphorus compound that has an aryl group, has a phosphorus atom with an oxidation number of +5, and has a melting point of 23° C. or higher.
Claims11
A curable composition comprising:
- (A) an organic polymer having a silyl group cross-linkable by siloxane bond formation;
- (B) a guanidine compound as a silanol condensation catalyst, represented by formula (1):
- R1N═C(NR12)2 (1)
- wherein each of the five R1s is independently at least one selected from the group consisting of a hydrogen atom, a hydroxy group, an amino group, a nitro group, a cyano group, a sulfonic acid group, and an organic group, provided that at least one of the five R1s is an aryl group;
- and
- (C) a phosphorus compound that has an aryl group, has a phosphorus atom with an oxidation number of +5, and has a melting point of 23° C. or higher.
Dependencies are inferred from the claim text.